# Copyright (c) 2024 Florian G. Hechler
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# of this software and associated documentation files (the "Software"), to deal
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from libqtile.widget import base
[docs]class HDD(base.ThreadPoolText):
"""
Displays HDD usage in percent based on the number of milliseconds the device has been performing I/O operations.
"""
defaults = [
("device", "sda", "Block device to monitor (e.g. sda)"),
(
"format",
"HDD {HDDPercent}%",
"HDD display format",
),
]
def __init__(self, **config):
super().__init__("", **config)
self.add_defaults(HDD.defaults)
self.path = "/sys/block/{dev}/stat".format(dev=self.device)
self._prev = 0
def poll(self):
variables = dict()
# Field index 9 contains the number of milliseconds the device has been performing I/O operations
with open(self.path) as f:
io_ticks = int(f.read().split()[9])
variables["HDDPercent"] = round(
max(min(((io_ticks - self._prev) / self.update_interval) / 10, 100.0), 0.0), 1
)
self._prev = io_ticks
return self.format.format(**variables)